diff --git a/pd/src/m_pd.h b/pd/src/m_pd.h
index 8d964078df5e84fb8f0ceca0ff1bbdff5809e82e..209dbcafb4c215787f2eda799cd54890b6bd2da5 100644
--- a/pd/src/m_pd.h
+++ b/pd/src/m_pd.h
@@ -14,7 +14,7 @@ extern "C" {
 #define PD_MINOR_VERSION 48
 #define PD_BUGFIX_VERSION 0
 #define PD_TEST_VERSION ""
-#define PD_L2ORK_VERSION "2.5.0"
+#define PD_L2ORK_VERSION "2.5.1"
 #define PDL2ORK
 extern int pd_compatibilitylevel;   /* e.g., 43 for pd 0.43 compatibility */